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Interesting thread. My 2017 400 is somewhat inconsistent when heel and toe-ing. It's not terrible but no other car I've ever owned has been so finicky with it. I have always suspected it had something to do with the ECU.

Lotus is gearing up to finally make US-spec 430s so they are not completely dead. As a prospective owner, I am on the list for the launch event to occur early in 2019. Full details on the US-spec model will be coming in the next few weeks apparently (we are expecting a slightly watered down version).

Received my indoor cover yesterday and finally opened up the box today. What a beautiful piece of work! Fits my 400 perfectly and is such a premium cover compared to several other covers I have used on other cars. Worth the money and the wait. Thank you!

I find that I rarely even use 6th gear unless I am doing 85+mph. Since the 400 is supposed to top out at 186mph and the 410 at 190mph, I think picking a final drive ratio that gets you to that top speed right at the 7k rpm redline makes sense, instead of having the car geared to do a theoretical top speed over over 200mph that it doesn't have enough power to actually achieve. On the 400 and us, that would mean approximately a 7% reduction in FD ratio, which at cruising speeds would mean a rise of only a couple of hundred rpm in top gear.
As someone who has owned a bunch of sportbikes that came with sky-high gearing (I am looking at you, Ducati), reducing the final drive ratio 7% makes a vehicle so much livelier and easier to use (it's a simple sprocket change on a bike). I also have owned a number of Mitsubishi Evos (which have short rally-style gearing) and it is so much fun to be able to run up through the gears bop bop bop instead of waiting waiting waiting to shift like the Evora.
Go for it, johnnyboy!

jonnyboy - I agree 100% about the gearing being too tall on the Evoras and also haven't been able to find anyone who has actually done a ratio change. 100mph is only 3500rpm on my 400, which means it's geared to do over 200mph! Dumb.
I encourage you to do the ratio change so that you can tell me all about the pros and cons of it! Hah seriously though I would love to get some real information about the swap.

Nice job doing this test, Steffen! There have been a number of articles/tests over the years in car and motorcycle magazines about the improvement in performance that lighter wheels can make and even though the original equipment Lotus 'forged' wheels on a 400 are relatively light for their sizes (by my measurements about 21lbs front, 27lbs rear), they can be improved upon.
Here is an article by Car and Driver magazine about the difference that the factory fitted carbon fiber wheels make on the amazing GT350R:
https://www.caranddriver.com/news/tested-quantifying-the-performance-benefits-of-the-shelby-gt350rs-carbon-fiber-wheels

Update: Hey guys - after researching the forums, consulting with experts, taking measurements, and with the kind attention and service of Sherman at HethelSport, I ordered BC Forged wheels and I got them installed yesterday. They wheels were actually here in less than 4 weeks from the date of purchase, which is incredibly quick.
As for the wheels, here are the specs:
19x8.5 ET47, 20.6lbs
20x10.5 ET69, 22.9lbs
My OE forged wheels weighed 21lbs front and 26.7lbs rear so even though the BC wheels are half an inch wider in front and a full inch wider in the rear, they are still lighter. The new tires are slightly heavier, though.
I personally weighed both sets of wheels with the tires on them and subtracted the weights listed by Tire Rack (Bridgestone S007A - 25lbs for 245/35/19 , 28lbs for 295/30/20). I have done about 150 miles on the car since installing them, city driving and hammering down some great back roads. No rubbing at all and I removed the wheels to double check when I got home earlier. Very very VERY HAPPY with them!
Pics here at Hethelsport.com:
http://hethelsport.com/wheels/bc-forged/rz23-dark-black-3.html#previous-photo
http://hethelsport.com/wheels/bc-forged/rz23-dark-black-4.html
http://hethelsport.com/wheels/bc-forged/rz23-dark-black-5.html#previous-photo
A few more things: they are the RZ23 model wheel in Brushed Dark Black. I specifically ordered them with a similar level on concavity front and rear because I don't like seeing wheels on things like 911 that have a relatively flat front wheel profile and then a hugely dished/concave rear wheel.
The funny thing is that the RZ23 is basically a knock-off of the 2014 Camaro Z/28 wheel, which I thought was one of the best looking OE wheels ever. Here is a pic:
http://www.seriouswheels.com/pics-20...l-1280x960.jpg

Ok got it well good luck with your wheels! I have some BC Forged ones coming via HethelSport in a few weeks. Looks like I might be a bit of a 'test pilot as far as wheel size and offset, but hopefully my calculations have been correct.
Was also contemplating the PS4S but want a little more ultimate grip - I have run SportCup2s and now Yokohama AD08Rs on my Focus RS and love the grip levels of those near-R comp tires, although the Michelins are compromised in the wet and cold (the AD08Rs are excellent and surprisingly good near sub freezing and/or wet). Then I saw that Bridgestone has a brand new S007A tire, a replacement for the excellent old RE11 that I ran on my Boss 302. They are very light for their sizes and relatively inexpensive. Per a conversation I had with a guy at tirerack.com, he said they will be grippier than the PS4S and not far off the RE71R but with better road manners than that tire. Sounds perfect for an Evora.

Hello guys - my driver's side mirror vibrates pretty badly at elevated speeds, making seeing behind me almost impossible. Is this normal? It appears to be just the glass, not the whole side mirror assembly. I have used the electric adjustment to try different angles and that didn't make any difference.
Any help would be greatly appreciated! Thank you.

DBG - thank you! Is that rear wheel a 10" ET58? And what will your front wheel specs be?
My goal is to run the 245/35/19 and 295/30/20 tire size that is the same used on the 430. Worst case scenario (i.e. if there is any rubbing), I suspect that I could use the stock 400 size tires in a stickier compound that the Pilot Super Sports. The whole reason I want the 430 spec tires is because I want to maximize grip without having to resort to R compound tires and their compromises in the cold and wet.

Excellent, thank you guys. When I compressed my suspension, it doesn't seem like the tire will get high enough in the fender well to get to the fender lip even if it is slightly taller, wider, and sits further out than the OE wheel/tire.
Should I even ask about the 19x8.5 ET47 wheels with 245/35/19 tires I have coming? Doing the same test to the front suspension (i.e. fully compressing it), that one looks like it will be a close fit, too.

Anybody have additional insight? I was able to fully compress the rear suspension (via jacking the car up, stacking 2x12 boards under the rear tire and then letting the car down off the jack) and it seems like I will have enough room both vertically and horizontally for a 20x10.5 ET69 with 295/30 tire but I am still curious if there is any difference in the actual rear fender and liner of the 400 and the 430.